Hello everyone. This year I receive an iPad II from my parent as a Christmas present. It is still in the box and I don't open it yet. Because I am confused. One of my friend told me that iPad 4 is great device and its retina display feature is really awesome. So he suggest me to exchange the iPad II for an iPad IV. But I have to add around extra 150$ if I really do the change. Is retina display really worth extra 150$. I am into a some kind of dilemma. So please help me guys to take the right decision. Thanks in advance.